A multifold Hopf semimetal is a topological point node possessing an anisotropy in the internal electronic structure, e.g., dipole structure of Berry curvature. In this paper, unique features threefold semimetals terms optical conductivity are theoretically investigated with minimal theoretical model by using linear response theory for linearly polarized photon. The frequency spectrum shows ani...

In this paper, we investigate the optical response of PbBiI single-layer by developing a strain-induced Kane–Mele model from Peierls substitution and employing Kubo formula at low temperatures. We address three different regimes uniform non-uniform classes created tuning strength strain. From detailed analysis electronic band structure, find that Rashba spin splitting gap is destroyed with stra...

Optical conductivity measurements may provide access to distinct signatures of Floquet electronic phases, which are described theoretically by their quasienergy band structures. We characterize experimental observables the graphene antidot lattice (FGAL), we introduced previously [Phys. Rev. B 104, 174304 (2021)]. On basis linear response theory, real and imaginary parts longitudinal Hall optic...